Domestic water heating unit

摘要

The unit has a control unit controlling warming of processing water and designed for detecting requirement of the processing water. The control unit evaluates an output signal of a temperature sensor (96) i.e. flow rate sensor. The sensor is arranged in proximity of a node point (97) and at a distance from the node point in a cold processing water (DCW). The control unit switches-on and switches off a circulation pump (46) in dependent upon requirement of the processing water. A circulation control is partially integrated in the control unit.